Which substance ( HI or Xe ) has the higher boiling point?
Its HI but chose one of the most appropriate reason.
1. Both substances are nonpolar but the higher boiling includes hydrogen bonding 2. Both substances are nonpolar but the higher boiling is more polarizable
3. The higher boiling substance is polar and the other is not
4. The lower boiling substance is polar and the other is not
5. The higher boiling substance has smaller vander Waals forces than the lower boiling
6. The higher boiling substance has greater vander Waals forces than the lower boiling
7. The higher boiling substance is ionic and the other is not
8. The lower boiling substance is ionic and the other is not
9. The higher boiling substance has hydrogen bonds and the other does not 10. The lower boiling substance has hydrogen bonds and the other does not 11. Both substances are ionic but the higher boiling has a larger cohesive energy
12. Both substances are ionic but the lower boiling has a larger cohesive energy
13. The higher boiling substance is ionic and the other is not. Ionic bonds are stronger than hydrogen bonds
14. The lower boiling substance is ionic and the other is not. Ionic bonds are weaker than hydrogen bonds
15. The higher boiling substance is ionic and the other is not. Ionic bonds are stronger than vander Waals forces
16.The lower boiling substance is ionic and the other is not. Ionic bonds are weaker than vander Waals forces
Again, most of these statements are not true. #7 might be close to being true but HI is not all THAT ionic. I would go with 3. I think both substances have about the same van der Waals forces.
thnx you are correct
The correct reason for HI having a higher boiling point than Xe is:
1. Both substances are nonpolar, but the higher boiling substance includes hydrogen bonding.
The most appropriate reason for HI having a higher boiling point than Xe is option 9: The higher boiling substance has hydrogen bonds and the other does not.
To determine the reason for the difference in boiling points between HI and Xe, we need to analyze the intermolecular forces present in each substance. Intermolecular forces are the attractive forces between molecules that determine their physical properties, such as boiling points.
HI (hydrogen iodide) is a polar molecule because it consists of hydrogen (H) and iodine (I), with iodine being more electronegative than hydrogen. This polarity allows for the formation of hydrogen bonds between HI molecules.
On the other hand, Xe (xenon) is a nonpolar molecule because it consists only of xenon atoms, which have similar electronegativities and result in an even distribution of electrons.
Hydrogen bonds are a specific type of intermolecular force that occurs when a hydrogen atom is bonded to a highly electronegative atom (such as iodine in HI). These bonds are stronger than other intermolecular forces, such as van der Waals forces, which are present in nonpolar substances like Xe.
Since HI can form hydrogen bonds while Xe cannot, the presence of hydrogen bonding in HI results in stronger intermolecular forces and requires more energy to separate the molecules, leading to a higher boiling point compared to Xe.
Therefore, option 9 (The higher boiling substance has hydrogen bonds and the other does not) is the most appropriate reason for HI having a higher boiling point than Xe.